Trebleshot had a spreadsheet that has all of the American released TF's on it from G1 to Classics, really nice. I can send it to you if you wanna pm me your email addy.
There's always the offical TF site: http://www.hasbro.com/transformers/default.cfm?page=Collectors/Checklist
They're STILL listing the cancelled Target exclusive Energon "Megatron & Soundwave" and "Optimus Prime with mini Optimus Prime" packs...
Trebleshot, long time no see. He's tha man, that spreadsheet if freakin awsome, I still use it all the time. (just had to give props on it again) Hay if you'er into bio's I got something I want let you to check out, it's not as kool as your spreadsheet but it's been my little side project for a while, gimme a pm
What was the "Optimus Prime with mini Optimus Prime" supposed to be anyway? Any pics of this ever surface?
Prime would have been what fans started to call "Santa Prime". http://www.tfw2005.com/boards/showthread.php?t=125965 "Mini Optimus Prime" and Soundwave would have been the WSTFs. We saw a test shot, presumably from Hasbro's factory, of WSTF Prime (cab + trailer) around the same time as pics of the Energon Prime and Megatron repaints surfaced, plus Hasbro said at OTFCC 2003 that Prime and Soundwave would be the WSTFs that had the best chance of being release stateside, depending on retailer support.